@article{NUMA_1963__5_131565,
     author = {J. DESCLOUX},
     title = {Bounds for the {Spectral} {Norm} of {Functions} of {Matrices.}},
     journal = {Numerische Mathematik},
     pages = {185--190},
     publisher = {mathdoc},
     volume = {5},
     year = {1963},
     zbl = {0114.32303},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1963__5_131565/}
}